Неправильно прописывается путь к файлу

 <script> 
                // PostBlob method uses XHR2 and FormData to submit 
                // recorded blob to the PHP server 
                function PostBlob(blob) { 
                    // FormData 
                    var formData = new FormData(); 
                    formData.append('video-filename', fileName); 
                    formData.append('video-blob', blob); 
 
                    // progress-bar 
                    var hr = document.createElement('hr'); 
                    container.appendChild(hr); 
                    var strong = document.createElement('strong'); 
                    strong.id = 'percentage'; 
                    strong.innerHTML = 'Video upload progress: '; 
                    container.appendChild(strong); 
                    var progress = document.createElement('progress'); 
                    container.appendChild(progress); 
 
                    // POST the Blob using XHR2 
                    xhr('/RecordRTC/PostRecordedAudioVideo', formData, progress, percentage, function (fName) { 
                        container.appendChild(document.createElement('hr')); 
                        var mediaElement = document.createElement('video'); 
 
                        var source = document.createElement('source'); 
                        source.src = location.href + 'uploads/' + fName.replace(/"/g, ''); 
                        source.type = 'video/webm; codecs="vp8, vorbis"'; 
 
                        mediaElement.appendChild(source); 
 
                        mediaElement.controls = true; 
                        container.appendChild(mediaElement); 
                        mediaElement.play(); 
 
                        progress.parentNode.removeChild(progress); 
                        strong.parentNode.removeChild(strong); 
                        hr.parentNode.removeChild(hr); 
                    }); 
                } 
 
                var record = document.getElementById('record'); 
                var stop = document.getElementById('stop'); 
                var deleteFiles = document.getElementById('delete'); 
 
                var preview = document.getElementById('preview'); 
 
                var container = document.getElementById('container'); 
 
                var recordVideo; 
                record.onclick = function () { 
                    record.disabled = true; 
 
                    navigator.getUserMedia = navigator.getUserMedia || navigator.mozGetUserMedia || navigator.webkitGetUserMedia; 
                    navigator.getUserMedia({ 
                        audio: true, 
                        video: true 
                    }, function (stream) { 
                        preview.src = window.URL.createObjectURL(stream); 
                        preview.play(); 
 
                        recordVideo = RecordRTC(stream, { 
                            type: 'video' 
                        }); 
 
                        recordVideo.startRecording(); 
 
                        stop.disabled = false; 
                    }, function (error) { 
                        alert(error.toString()); 
                    }); 
                }; 
 
                var fileName; 
                stop.onclick = function () { 
                    record.disabled = false; 
                    stop.disabled = true; 
 
                    preview.src = ''; 
 
                    fileName = (Math.round(Math.random() * 99999999) + 99999999) + '.webm'; 
 
                    recordVideo.stopRecording(function () { 
                        PostBlob(recordVideo.getBlob()); 
                    }); 
 
                    deleteFiles.disabled = false; 
                }; 
 
                deleteFiles.onclick = function () { 
                    deleteAudioVideoFiles(); 
                }; 
 
                function deleteAudioVideoFiles() { 
                    deleteFiles.disabled = true; 
                    if (!fileName) return; 
                    var formData = new FormData(); 
                    formData.append('delete-file', fileName); 
                    xhr('/RecordRTC/DeleteFile', formData, null, null, function (response) { 
                        console.log(response); 
                    }); 
                    fileName = null; 
                    container.innerHTML = ''; 
                } 
 
                function xhr(url, data, progress, percentage, callback) { 
                    var request = new XMLHttpRequest(); 
                    request.onreadystatechange = function () { 
                        if (request.readyState == 4 && request.status == 200) { 
                            callback(request.responseText); 
                        } 
                    }; 
 
                    if (url.indexOf('/RecordRTC/DeleteFile') == -1) { 
                        request.upload.onloadstart = function () { 
                            percentage.innerHTML = 'Upload started...'; 
                        }; 
 
                        request.upload.onprogress = function (event) { 
                            progress.max = event.total; 
                            progress.value = event.loaded; 
                            percentage.innerHTML = 'Upload Progress ' + Math.round(event.loaded / event.total * 100) + "%"; 
                        }; 
 
                        request.upload.onload = function () { 
                            percentage.innerHTML = 'Saved!'; 
                        }; 
                    } 
 
                    request.open('POST', url); 
                    request.send(data); 
                } 
 
                window.onbeforeunload = function () { 
                    if (!!fileName) { 
                        deleteAudioVideoFiles(); 
                        return 'It seems that you\'ve not deleted audio/video files from the server.'; 
                    } 
                }; 
        </script>